| Title |
Simultaneous measurement of thickness and elastic properties of thin plastic films by means of ultrasonic guided waves / |
| Authors |
Kažys, Rymantas Jonas ; Tumšys, Olgirdas |
| DOI |
10.3390/s21206779 |
| Full Text |
|
| Is Part of |
Sensors.. Basel : MDPI. 2021, vol. 21, iss. 20, art. no. 6779, p. 1-17.. ISSN 1424-8220 |
| Keywords [eng] |
PVC films ; ultrasonic guided waves ; ultrasonic measurements ; plastic materials ; elastic properties of PVC film ; thickness measurement |
| Abstract [eng] |
Ultrasonic guided waves are already used for material characterization. The advantage of these waves is that they propagate in the plane of a plate and their propagation characteristics are sensitive to properties of the material. The objective of this research was to develop an ultrasonic method that could be used to measure the properties of thin plastic polyvinylchloride films (PVC). The proposed method exploits two fundamental Lamb wave modes, A0 and S0, for measurement of a thin film thickness and Young’s modulus. The Young’s modulus is found from the measured phased velocity of the S0 mode and the film thickness from the velocities of both A0 and S0 modes. By using the proposed semi-contactless measurement algorithm, the Young’s modulus and thickness of different thickness (150 m and 200 m) PVC films were measured. The uncertainty of thickness measurements of the thinner 150 m PVC film is 2% and the thicker 200 m PVC film is 3.9%. |
| Published |
Basel : MDPI |
| Type |
Journal article |
| Language |
English |
| Publication date |
2021 |
| CC license |
|
